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I think you're thinking of the 3274, which uses 8" floppies. The 3174 family uses 5.25".
-Dave
On June 28, 2019 5:10:16 PM "Wayne Bickerdike [email protected] [hercules-390]" <[email protected]> wrote:
> The drive is probably double sided double density.
>
> Quite rare.An old friend of mine gave me an 8" drive that came from a 4300.
> It was used to load micro code. Quite possibly used the same format.
>
>
>
> On Sat, Jun 29, 2019 at 3:41 AM Benjamin Huntsman
> BHuntsman-KAweP20W6/[email protected] [hercules-390] <[email protected]>
> wrote:
>
>>
>>
>>
>>
>> Hi there!
>>
>>
>> I've seen it discussed a few times, but no definitive answers that I
>> could piece together...
>>
>>
>> Has anyone on here successfully read or duplicated a 3174 diskette on a
>> regular computer? If so, can you tell me what hardware, drive, and
>> software you used?
>>
>>
>>
>>
>> I'm trying to resurrect my old 3174 and get my 3290 running, and I'm
>> really hoping to know for sure:
>>
>>
>>
>>
>>
>>
>> 1. What format are the 3174 disks? I know they're 2.4MB drives, but
>> are the floppies actually 2.4MB?
>> 2. Will the 3174 read a regular 5.25" floppy?
>>
>>
>>
>>
>> From a historical perspective, does anyone know anything about the
>> workflow or tools used in how IBM developed the 3174 and it's microcode?
>>
>>
>>
>>
>> Thanks much as always!
>
>
> --
> Wayne V. Bickerdike
--
Dave McGuire, AK4HZ
New Kensington, PA